CN104813140B - Method and apparatus for passing through machine tool measuring workpiece - Google Patents
Method and apparatus for passing through machine tool measuring workpiece Download PDFInfo
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- CN104813140B CN104813140B CN201380058806.XA CN201380058806A CN104813140B CN 104813140 B CN104813140 B CN 104813140B CN 201380058806 A CN201380058806 A CN 201380058806A CN 104813140 B CN104813140 B CN 104813140B
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- probe
- lathe
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- processed goods
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/047—Accessories, e.g. for positioning, for tool-setting, for measuring probes
Abstract
The present invention provides a kind of method for examining the processed goods on lathe comprising: the probe on the lathe is mounted on along the surface scan of the processed goods to be tested.This method is related to supply fluid stream at the interaction point during the scanning at least between the probe and the processed goods.
Description
The present invention relates to one kind for measuring part, specifically for the method for scanning the part on machine tool and sets
It is standby.
It is well known that examining part during and after manufacturing part, while part is still located in machine tool.Such inspection
It tests comprising using, for example, the contact type measurement probe described in WO2012/098355 measures part.The operation of machine tool
Environment usually has many coolant, chip and other pollutants for using or generating during machined part in lathe.
Measurement probe storage comprising measuring probe allows the measurement probe to measure target in lathe.
It is well known that measurement probe is mounted in machine tool chief axis with mobile relative to workpiece in order to measure workpiece.It is practical
On, especially in the case where lathe, probe is usually to contact trigger-type probe, for example, such as in the 4th, 153, No. 998 United States Patent (USP)
Description, the contact trigger-type probe generate trigger signal in the stylus contact workpiece surface of probe in (McMurtry), and
And the probe is used to use discrete spot measurement by each contact of probe and workpiece.This trigger signal is used for the number of lathe
So-called " jump " of word controller (NC) inputs.In response, the relative movement stopping of target and workpiece and controller is adopted
With the temporal read of the position (that is, the position of main shaft and probe relative to machine) of machine.This is from the movement for machine
It provides in servo control loop and is obtained in the measuring device (for example, encoder) of the machine of position feedback information.Use this germline
The shortcomings that system, is that measurement process is relatively slow, to lead to longer time of measuring in the case where needing a large amount of measurement points.
It it is known that analogue measurement probe (also commonly referred to as scanning probe).Contact is simulated/is scanned probe and generally includes
For the contact pilotage on contact workpiece surface, and the energy converter in probe of the measurement contact pilotage relative to the deflection of probe body.?
Example is shown in No. 4,084,323 United States Patent (USP) (McMurtry).When in use, surface of the analogue probe relative to workpiece
It is mobile so that stylus scans surface and obtain probe energy converter output end continuous-reading.By probe deflection output and machine
The output combination of device position allows to obtain coordinate data, thus allows in entire scanning with the position of a large amount of point discovery workpiece surfaces
It sets.Therefore, compared with actual capabilities use contact trigger-type probe, analogue probe allows to obtain the more detailed of workpiece surface form
Measurement.It will be understood that during such scan operation, surface of the probe (for example, contact pilotage, for example, stylus tip) relative to workpiece
Constantly slide.
Contact pilotage generally includes to be intended for contact workpiece/processed goods stylus tip during measurement.In general, stylus tip
It is spherical and is fabricated to high-precision, and is calibrated to ensure controlled diameter, this is for ensuring the measurement using contact pilotage acquisition
The accuracy of value may be very important.The shape/size of stylus tip changes or even micron-sized small change may
There is significant adverse effect to the accuracy of the measured value of acquisition.
It is such as proposed in WO2005/015121, it has been found that can produce by the scanning of contact type probe can influence to visit
Three phenomenons of needle/contact pilotage/stylus tip metering performance:
1. abrasive wear；
2. residue generates and/or set；
3. adhesive wear (is also known as adhering).
During scan operation, when material is removed from stylus tip, abrasive wear causes the form for scanning stylus tip
Change.In inspection, residue is generated and set causes freely or loosely adhering on the surface of stylus tip or part
Particle.Adhesive wear (adhesion) occurs when the material from part just tested adheres to stylus tip.This and residue
Generation/set the difference is that, material is very strongly adhered (for example, it can be with the material of stylus tip with chemistry
Mode bonds) and accumulate in the region for the contact area for concentrating on contact pilotage.When measurement oxide layer is not yet formed in surface completely
On metal (for example, the aluminium) being newly machined when it is especially true.
Abrasion/adhesion of all three types can influence the shape/size of stylus tip, and therefore negatively affect
Measure the accuracy of operation.It has been found that adhesive wear is especially serious problem when along the surface scan of part and may
The service life of contact pilotage is decreased to only several meters.Lathe is especially true because designed for lathe probe can have it is higher
Contact pilotage spring force (for example, to handle the relatively large vibration and power that probe is exposed compared with coordinate measuring machine CMM) and
Also (as described above) shortly after machining and before having time forms oxide layer on the surface because usually measure
Part.
The present invention provides a kind of improved method that the processed goods on lathe is examined using measurement probe, the method packet
It includes and forms fluid stream at the contact point between measurement probe and processed goods during measurement.
According to the first aspect of the invention, a kind of method for examining the processed goods on lathe is provided, which comprises edge
Processed goods to be tested surface scan be mounted on the probe on lathe with obtain/collect measurement data；It is characterized in that, institute
The method of stating includes supply fluid stream at interaction point during the scanning at least between probe and processed goods.
It has been found that supply fluid stream will dramatically increase probe/stylus/stylus tip service life (in our experiment
In, have sought to from 10m (rice) increase to probe/stylus/stylus tip service life 20km (km), increase by 2000 times).
Such effect can be attributed to the fact that the lubricating action of fluid stream.Additionally, it has been found that this is to measurement accuracy, there is no adverse effects.
In fact, the accuracy of scan operation can be improved due to substantially reducing abrasion and adhesion (specifically, adhesive wear).
It will be understood that at least one fluid flow installations can provide fluid stream.Fluid flow installations may include for transmitting
Through and/or natively the fluid stream in the operating environment of lathe so as to make fluid stream be in it is mutual between probe and processed goods
Device at position.For example, fluid flow installations may include the fluid (example in the operating environment for mobile machine tool
Such as, the gas of air etc.) fluid displacement device, for example, fan.
Fluid flow installations may include at least one outlet, for example, fluid leaves fluid flow installations by it to make to flow
Body stream is in the outlet at the interaction point between probe and processed goods.It is described outlet may include at least one opening, it is more
Hole component, perforated member and/or fluid penetrable film or fellow, fluid can introduce the behaviour of lathe by these components
Make in environment.
Fluid flow installations may include at least one outlet, and fluid is introduced into the operating environment of lathe by the outlet
To be in fluid stream at the interaction point between probe and processed goods.
Fluid flow installations can be orientation.Specifically, fluid flow installations, which can have, can be used for guiding fluid
At least one nozzle or fellow.During the scanning, towards probe and it can be processed by least one fluid flow installations
Interaction point between product guides fluid.Fluid can be channeled directly into the interaction point between probe and processed goods
Place.Fluid can be directed near the contact point between probe and processed goods by least one fluid flow installations.Optionally,
During the scanning, fluid can be directed to the reality between probe and processed goods by least one fluid flow installations
At interaction point separation but the point being substantial access to, to make fluid stream at least in probe and processed goods during the scanning
Between interaction point at.
Fluid flow installations may include at least one fluid for storing the fluid being used together with method of the invention
Storage tank.Fluid flow installations may include for fluid to be supplied at least one at least one pump exported from fluid reservoir.Stream
Body stream device may include at least one fluid conditioner, and the fluid conditioner is used to adjust institute during the method for the present invention
The fluid used.Fluid conditioner may include at least one filter, and the filter is configured to method of the invention
Period clears the pollution off from fluid.Fluid conditioner may include at least one thermoregulator, in side of the invention
The temperature of fluid is controlled in the preset range of (for example) predetermined temperature during method.
Probe may include at least part of fluid flow installations.For example, probe may include at least one outlet,
Fluid introduces operating environment from the outlet to form fluid stream at the interaction point between probe and processed goods.Example
Such as, probe may include at least one nozzle, and fluid is attached from the nozzle, such as towards the contact point between probe and processed goods
Nearly injection, such as sprayed directly at the contact point.Optionally, probe may include at least one perforation or porous assembly,
Fluid is introduced into the operating environment of lathe that fluid stream is made to be in probe and processed goods by the perforation or porous assembly
Between interaction point at.For example, probe may include the contact pilotage extended from probe body.Contact pilotage may include being intended to
For contacting the tip of processed goods during measuring operation.Contact pilotage and/or stylus tip can be perforation and/or porous.
Therefore, this can contribute to fluid flow out in the operating environment of lathe so as to make fluid stream be between probe and processed goods
At interaction point.It may therefore be necessary to provide pipeline supplies fluid to contact pilotage and/or stylus tip.This can be provided
In probe itself, for example, being provided in contact pilotage.Probe may include for storing the stream being used together with method of the invention
At least one fluid reservoir of body.Probe may include for fluid to be transmitted to at least one outlet of fluid flow installations extremely
A few pipeline.
Optionally, fluid flow installations are independently of probe.Therefore, can independently/with probe separates provide it is any outlet,
Storage tank, pipeline and any other associated component.This can indicate that the present invention can be used together with the known probe of standard.Cause
This, all components of fluid flow installations can be provided in lathe on the part of probe separates.
It will be understood that needing the relative movement between processed goods and probe to make probe scanning processed goods.Processed goods can be with
Mobile probe simultaneously is configured to remain stationary in lathe.For example, lathe can be configured at least one dimension
On, optionally at least two orthogonal dimensions, such as the mobile processed goods at least three orthogonal dimensions.
Lathe can be configured at least one rotary freedom (for example, about at least one axis), optionally be rotated certainly at two
By spending above (for example, about at least two orthogonal axis), such as (for example, about at least three phases on three rotary freedoms
Mutually vertical axis) movement processed goods.Therefore, processed goods can be configured in the operating environment of lathe and move.
Optionally, at least some relative movements and optionally all relative movements can be by the movements of probe come real
It is existing.For example, lathe can be configured at least one dimension, optionally at least two orthogonal dimensions
On, such as the traveling probe at least three orthogonal dimensions.Lathe can be configured at least one rotation freely
(for example, about at least one axis) on degree, on optionally two rotary freedoms (for example, about at least two orthogonal axis),
Such as (for example, the about at least three orthogonal axis) traveling probe on three rotary freedoms.Therefore, probe can be through matching
It sets to be moved in the operating environment of lathe.
Therefore, the method may include move processed goods by any of manner described above to realize processing
Relative movement and/or traveling probe between product and probe is to realize the relative movement between probe and processed goods.
The method may include at least part of fluid flow installations mobile during the scanning, for example, it is at least
One outlet.The method may include at least make during the scanning at least part of fluid flow installations (for example, it is extremely
Few one outlet) follow any movement of probe.The method may include fluid flow installations are kept during the scanning
Constant position and/or directional relation between (for example, its at least one outlet) and probe at least partially.In this way can so as to
During the scanning keep fluid relative to the interaction point between probe and processed goods leave fluid flow installations (for example, from
Open its at least one outlet) constant direction.This can be by including that the probe of at least one outlet is realized.Optionally, at least
One outlet can be installed in lathe on the part for the movement for influencing probe.Therefore, fluid flow installations may include at least one
A outlet (for example, fluid is ejected from the outlet), the outlet are attached in lathe with the movement of probe and movement
On part.For example, at least one outlet can be installed on the main shaft of lathe, and probe is installed to institute during the scanning
It states on main shaft；And/or on the bracket of the movement of influence main shaft.
It will be understood that more than one outlet can be provided.In this case, the only one in the outlet, some or institute
There is outlet that can be configured to pass any of manner described above to move in the environment of lathe.For example, one
In a or multiple operating environments that can be fixed on lathe and one or more can move in the operating environment of lathe.
Lathe may include the cooling system for cooling down machine tool for supply coolant during machining operations.
The method may include the cooling systems of the lathe during the scanning to supply the fluid stream.The cooling system of lathe can be with
Including the filter for the filtering contaminants from coolant.Lathe may include two or more cooling systems.At least
One can use and at least one other cooling system can be during the measurement of workpiece during the machining of workpiece
It uses.Two or more cooling systems may include individual refrigerant reservoir and optionally use different coolants.
Fluid can be liquid.Liquid can be coolant.Fluid, which can be, to be made during machining operations by lathe
Fluid.For example, fluid/liquid can be the coolant used during machining operations by lathe.Coolant can be with
It is aqueous coolant, oil-based coolant, or any of the plurality of liquid actually usually used on lathe or latex.It is excellent
Selection of land, liquid provide lubrication between the interaction point between probe and processed goods.
Fluid can be gas.Fluid flow installations may include compressed gas source.Fluid can be the group of liquids and gases
It closes.Fluid can be moisture.
Probe can be measurement probe, specifically dimension measurement probe (that is, probe for obtaining dimension measurement).It visits
Needle may include the deflectable contact pilotage for contacting processed goods.Deflectable contact pilotage can in one dimension, such as in two phases
Mutually in vertical dimension, for example, in three orthogonal dimensions it is deflectable.As described above, contact pilotage may include being intended for
The stylus tip of processed goods is contacted between the sweep time.Stylus tip can be spherical.Probe can be at least one dimension
On degree, detection and/or measurement contact pilotage are inclined in two orthogonal dimensions, such as at least three orthogonal dimensions
Turn.Optionally, probe can monitor the degree of stylus deflection and when the deflection for detecting matching preassigned, such as beyond pre-
Threshold value is determined, (or even for example when signal exists, for example, by upper limit threshold and lower threshold when being greater than or being less than predetermined threshold
Define) outside predetermined tolerance range when) or for example when detecting predetermined deflection mark, provide and/or change output signal.It visits
Needle can be configured to the measurement of the degree of deflection of output contact pilotage.Probe can be exported for each of wherein probe in detecting deflection
The independent measurement of dimension.Optionally, probe can provide in the dimension that can be measured for its middle probe at least two (optionally
At least three dimension of ground) collective measurement.
It is to be understood, therefore, that probe can be commonly referred to as contacting the probe of trigger-type probe or can be usually quilt
Referred to as scan the probe of probe (also referred to as analogue probe).
The method may include probe is loaded into the main shaft of lathe.It will be understood that main shaft is a part of lathe,
Cutter can be loaded onto lathe to be machined to processed goods during machining operations.Therefore, the method
It may include that probe is loaded into in the main shaft of lathe substitute machine cutter.The method may include (for example) using installation
Cutter in main shaft is machined processed goods.The machining can before the scanning, in the scanning
It period and/or is completed after the scanning.The machining may include that at least one fluid flow installations draws towards cutter
Baffle, for example, liquid, specifically for example, coolant.The fluid flow installations used during the machining can be with
The fluid means used during the scanning is identical.
According to another aspect of the present invention, a kind of equipment for examining processed goods is provided comprising: lathe；It is mounted on
Probe on lathe；Fluid flow installations；Wherein the equipment is arranged such that wherein along the surface of the processed goods in lathe
During the measurement operation for scanning probe, fluid flow installations are operated so that fluid stream is at least in the phase between probe and processed goods
At interaction point.
According to another aspect of the present invention, a kind of method for examining the processed goods on lathe is provided comprising: along to be checked
The surface scan for the processed goods tested is mounted on the probe on lathe to obtain measurement data；It is characterized in that, in the sweep time
Between at least part of processed goods for testing be immersed in liquid.
Another aspect according to the present invention provides a kind of method for examining the processed goods on lathe comprising: use peace
Probe on lathe carrys out test-target to obtain measurement data；It is characterized in that, the method includes for example, in processed goods
Inspection period make liquid pass through probe.
According to another aspect of the present invention, it provides and a kind of including lathe and is mounted on lathe for examining processed goods
The equipment of probe, the probe includes at least one fluid pipeline, and the equipment includes for providing the liquid by probe
The liquid flow device of body stream.Liquid flow device can be provided in the outside of probe.
Similarly, according to another aspect of the present invention, a kind of probe for test-target is provided, which is characterized in that institute
Stating probe includes at least one fluid pipeline that liquid can pass through (for example, passing through during checked operation).
Probe can be contact trigger-type probe or scan-type probe.Probe can be contact type probe or contactless spy
Needle (for example, light measurement probe).
It will be understood that also related to these other embodiments above in association with the feature of the first aspect of the present invention description.For example,
Probe may include at least one pipe outlet, and the liquid in pipeline can leave probe by the pipe outlet and enter wherein
Just using (for example, to the processed goods of positive test on) in the environment of probe.At least one pipe outlet can be provided in probe master
In body, contact pilotage and/or stylus tip.Probe may include liquid storage groove.Optionally, at least one fluid pipeline includes at least one
A entrance, liquid are supplied to probe by the entrance.At least one entrance/outlet may include at least one
A opening, hole, perforation and/or porous member.
According to examples described above, liquid can be temperature controlled.According to examples described above, liquid
It can be coolant.Liquid (for example, coolant) can by the liquid flow device that is used during the machining of processed goods/
Feed system (for example, cooling system) supply.
The embodiment of the present invention is described with reference to the following drawings, in which:
Fig. 1 is the schematic diagram for showing the system structure for lathe；
Fig. 2 is the schematic diagram for illustrating to implement using the coolant of the cooling system from lathe the 1st aspect of the present invention；
Fig. 3 is the flow chart for illustrating the step of wherein can be used involved in example procedure of the invention；
Fig. 4 a and Fig. 4 b are to illustrate to implement substitution of the invention using the liquid supplied from the storage tank provided by probe
The schematic diagram of mode；
Fig. 5 is the schematic diagram that explanation implements another method of the invention using air-flow rather than liquid；And
Fig. 6 is that explanation is related to scanning machining product the processed goods is at least partially submerged in substitution solution party in liquid simultaneously
The schematic diagram of case.
With reference to Fig. 1, machine tool 2 is shown comprising lathe 4, controller 6, PC 8 and emitter/receiver interface 10.
Lathe 4 includes the motor (not shown) for moving main shaft 12, which holds machine tool (example during machining operations
Such as, drill bit), but as shown in Figure 1, measure operation during can with relative to the workpiece 16 on workbench 15 hold probe,
For example, analogue probe 14 (also referred to as scanning probe).It is accurate by known way using encoder (not shown) or fellow
Ground measures the position of main shaft 12 (and therefore analogue probe 14).Such measurement provides the boundary in machine co-ordinate systems (x, y, z)
Fixed main spindle's data.Work of (it is a part of controller 6) the control main shaft 12 of digitial controller (NC) 18 in lathe
X, y, z in area is mobile and also receives data about main spindle's.
It will be understood that in alternative embodiments, the relative movement in any or all x, y and z-dimension can pass through workbench
The 15 mobile offer relative to main shaft 12.In addition, the relative rotation movement of analogue probe 14 and workpiece 16 can pass through main shaft 12
Part (for example, being mounted on rotation/articulating head on main shaft 12) and/or workbench 15 part (for example, turntable) provide.
In addition, movement can be limited to less dimension, for example, only x and/or y.Furthermore described embodiment includes former Cartesian machines
Bed, although it is understood that this might not be such and can be (for example) non-Cartesian lathe.It furthermore include lathe and parallel manipulator
A variety of other different types of lathes be known and can be used in conjunction with the invention.
In the embodiments described, analogue probe 14 is contact analogue probe comprising probe body 20, from probe
Workpiece contacting stylus 22 that main body 20 extends and have that (it is at this in 24 form of workpiece-contacting tip in the far-end of contact pilotage 22
The form of stylus ball spherical in shape in the case of kind) Surface testing area.Analogue probe 14 is in probe geometry system (a, b, c)
Measure the deflection of contact pilotage 22.(it is to be appreciated, however, that this might not be in this way, and for example analogue probe can be only at 1
Or deflection is measured in 2 dimensions, or even provide the output of instruction degree of deflection, any instruction without deflecting direction).
Probe 14 further includes wireless with emitter/receiver interface 10 (for example, by radio, optics or other wireless transmission mechanisms)
The emitter/receiver (not shown) of ground communication.It is more fully described in WO2012/098355 and to be used in conjunction with the invention
Such probe for lathe.
According to a variety of conventional machine tools, during measuring operation, NC 18 controls the opposite shifting of analogue probe 14 and workpiece 16
It is dynamic.The measurement data of x, y, z position about 12/ analogue probe 14 of main shaft is (from x, y, z axis (and any rotation of measurement lathe
Shaft) position encoder in receive) with stylus deflection data (by wireless transmitter/receiver interface 10 from simulation visit
Received in needle 14) it combines in order to provide workpiece calibration data.
According to the present invention, the interaction point during the scanning, at least between contact analogue probe and processed goods
Place provides fluid stream.This can be implemented by multitude of different ways described below.
Referring initially to Fig. 1 and Fig. 2, the nozzle 32 of cooling system 30 is shown.Usually as the case where multiple lathe 4, mention
For cooling system 30, which is configured to for coolant being supplied to and be loaded into main shaft 12 during machining operations
Machine tool (not shown), so as to avoid machine tool overheat and facilitate during operation from mechanical processing site remove
Chip and other residues.Cooling system includes the storage tank 34 of coolant, and during machining operations, which passes through court
The first pipe 36 sprayed to the interaction point between machine tool and workpiece is pumped into nozzle 32.The coolant used is fallen
To the bottom of lathe 4, then pass through second pipe 40 back to regulating system 38.In the embodiments described, system is adjusted
System 38 from filtered in coolant chip and other pollutants and also make coolant back to adjusting coolant before storage tank 34
Temperature so that the temperature is controlled in the preset range of predetermined temperature.It will be understood that regulating system 38 can execute it is additional or
Alternative functions.It is optionally possible to not need regulating system, and/or regulating system can be got around.
In the embodiments described, nozzle 32 and 12 two, main shaft, which are fixed to, shares on bracket 44, this shares bracket
Movement can be realized under the control of NC 18 by motor (not shown) (and this share bracket position can pass through volume
Code device (not shown) is determining and is reported to controller 6).Therefore, nozzle 32 and main shaft 12 move together, so that nozzle 32 is always
Towards any component guidance coolant being loaded into main shaft 12.This might not so and for example, and nozzle 32 can be with
It is independently moved relative to main shaft 12.In this case, which can be set on the movable carriage of its own simultaneously
And it can be configured to follow main shaft 12.Optionally, nozzle 32 can be fixed as static in lathe 4.Further, it will be appreciated that
Multiple nozzles (and actually multiple individual cooling systems) can be provided；One, some or all of nozzles in the nozzle
It can be configured to fix to move together with main shaft 12, and/or independently be moved relative to main shaft 12, and/or in lathe 4
Inside be fixed as it is static, or any combination thereof.Nozzle 32 can be rigid or can be flexible, so that its injection direction
It can be changed by user's bent nozzle 32.
Inventor is it has been found that for cooling down the identical cooling system 30 and very of machine tool during machining operations
To same coolant can be used for substantially reducing with using the scanning survey operation of contact analogue probe it is associated wear and
The problem of residue is adhered, and therefore increase contact analogue probe/contact pilotage/stylus tip work service life, for example, increasing
It adds up to 2000 times.For example, experiment has shown that the work service life of stylus tip can increase from the typical range of 10m (rice)
To 20km (km).
Therefore, as illustrated in figure 2, cooling system 30 can be operated, and coolant 42 is sprayed from nozzle 32,
Analogue probe 14 is scanned along workpiece 16 by the stylus tip 24 contacted with the surface of workpiece 16 simultaneously, to collect measurement number
According to.Cause coolant flow at such interaction point being injected between stylus tip 24 and workpiece 16 of coolant 42, has sent out
Existing this substantially reduces abrasion and adhesion, specifically above-mentioned adhesive wear.
Fig. 3 illustrates the example procedure 100 that method of the invention wherein can be used.The process starts from step 102, at this
Machining operations are executed so that component shaping using the machine tool in machine tool chief axis 12 at step.This can be related to having executed
Workpiece to be machined into set finished form by whole machining operations, or execute only one of machining operations
Point so that set/subsequent mechanical processing steps are needed to complete the final forming of workpiece.It will be understood that NC can be loaded into
Machining operations are executed under the control of program in 18.Once the machining operations of step 102 are completed, analogue probe 14
It is just loaded into the main shaft 12 of lathe and replaces machine tool.This can be automatically completed under the control of NC 18.Equally, exist
It is loaded under the control of the program in NC 18, starts at step 106 and executes measurement process, which is related to controlling
The relative movement of analogue probe 14 and workpiece 16 is to make stylus tip 24 by the surface dragging along workpiece, so as to cause contact pilotage
Deflection relative to probe body 20.Degree of deflection be recorded and by interface 10 be reported to controller 6 and then with master
12/ analogue probe of axis, 14 location information combines (for example, in controller 6 and/or PC 8).This step 106 in the process also relates to
And cooling system 30 is operated simultaneously so that at the interaction point between stylus tip 24 and workpiece 16 and at least to exist
Closely around forming coolant flow in the region of interaction point.Coolant 42 can be continuously pumped or optionally by
It pumps with having a rest, to form cooling at the interaction point during scanning survey operates between stylus tip 24 and workpiece 16
Agent stream 42.Once measurement operation is completed, it is determined whether needing any other machining at step 108.If arriving mesh
Before until executed the only only a part of complete mechanical processing process, and/or if the survey obtained during measurement process 106
Amount instruction needs additional machining so that workpiece 16 meets pre-provisioning request, it would be possible that needing further machining.Such as
Fruit needs more machinings, then in the main shaft 12 that machine tool is loaded onto lathe at the step 110 and then controlling
Continue back at step 102.If you do not need to more machinings, then subsequent process terminates.
In the above-described embodiments, coolant be used as liquid with the interaction point between stylus tip 24 and workpiece 16 at
Form fluid stream.However, liquid might not so and other than coolant can be used in this, for example, lubricating oil or water.
In addition, during measurement process for supply liquid/coolant system need not with used during machining operations it is cold
But system 30 is identical.Furthermore gas can be used to replace liquid.
Implement the example of alternative of the invention in conjunction with the description of other attached drawings.For example, such as institute in Fig. 4 a and Fig. 4 b
Illustrate, liquid can be supplied at the interaction point between stylus tip 24 and workpiece 16 by analogue probe 14.Citing comes
It says, in fig.4, probe 24 may include the liquid storage groove 46 of its own, and the storage tank discharges liquid 48 during measuring operation,
So that it flows downward towards workpiece 16 along contact pilotage 22 and tip 24.As illustrated in Fig. 4 b, analogue probe 14 may include
One or more nozzles 50, the nozzle can be used for spraying liquid towards the interaction point between stylus tip 24 and workpiece 16
48.Liquid 48 can store in the storage tank in probe 14.Optionally, in the embodiment of Fig. 4 a and Fig. 4 b, liquid 48 can be with
It is stored in the storage tank outside analogue probe 14 Nei and by pipeline supply to analogue probe 14.Storage tank can be cooling system
Storage tank 34.In this case, pipeline can pass through main shaft 12 and analogue probe 14.
In the above-described embodiments, liquid is for forming fluid at the interaction point between stylus tip 24 and workpiece 16
Stream.However, this might not be such.For example, the fluid in gas form alternatively can be used, including, for example, moisture
(e.g., including pause at the gas of liquid therein).For example, as shown in figure 5, being used for towards stylus tip 24 and workpiece
The nozzle 52 of interaction point guidance air-flow or moisture between 16 can be attached on bracket 44.(it will be understood that the reality with Fig. 2
The nozzle 32 for applying example is identical, can provide more than one nozzle, and if there is multiple nozzles, then nozzle can be relative to
Main shaft 12 is fixed, independently move relative to main shaft 12, fix relative to lathe, or any combination thereof).Nozzle 52 can wrap
Device is included, for example, pump or fan, to transmit lathe towards the region of the interaction point between stylus tip 24 and workpiece 16
Gas stream in environment.It is optionally possible to gas source is provided, for example, compression gas tank, and nozzle is connected to gas source and warp
Configuration is to guide gas towards the interaction point between stylus tip 24 and workpiece 16 from there.
In above-described embodiment of Fig. 2, Fig. 4 b and Fig. 5, nozzle can be arranged such that the fluid of nozzle discharge is straight
It connects towards the contact point between analogue probe 14 and workpiece 16 and guides.Optionally, nozzle is (or there are multiple nozzles
At least one of nozzle) it can be directed to separate but still be substantial access to contact point between analogue probe 14 and workpiece 16
At point, to provide fluid stream at contact point.
Alternate embodiment described herein is shown in Fig. 6.In this case, workpiece 16 is immersed in container 56
Liquid 54 in, for example, water, coolant are (for example, machine tool coolant, for example, the machine such as used during the machining of workpiece
Bed coolant), oil, rather than at the region for the interaction point that fluid stream is supplied between stylus tip 24 and workpiece 16.
Possible workpiece 16 be machined while being immersed in liquid (optionally same liquid 54) or possible workpiece 16 is in machinery
It is immersed in liquid 54 after procedure of processing and before measuring process.Analogue probe 14 is used subsequently to the surface along workpiece 16
Scanning is so as to around the collection measurement data of workpiece 16.Moreover, it has been discovered that this technology substantially reduces unfavorable abrasion and adhesion, for example,
Adhesive wear and the service life for therefore dramatically increasing analogue probe.It will be understood that wherein the example mistake of this technology can be used
Journey will be very similar to process shown in Fig. 3, in addition to step 106 will be related to executing survey by the workpiece 16 of submergence in a liquid
Except amount operation.
In the embodiment in fig 6, it is totally submerged workpiece 16.However, this might not be such.For example, workpiece can be with
Only partially submerged, the part of the workpiece 16 just measured in a part of 14 contact workpiece 16 of analogue probe is submerged.
It will be understood that highly schematically illustrate lathe, probe, control system and their multiple associated components, with
Just facilitate that the present invention is explicitly described, and will be understood that, multiple additional and/or replacement assemblies can be provided.
In the above-described embodiments, probe is simulation (or scanning) probe, but this might not be such.For example, probe
Can be contact trigger-type probe that the surface around workpiece is scanned (for example, to check if the probe deflection/triggering,
So which can serve to indicate that the defects of workpiece).
As shown in the embodiment of Fig. 4 (a) and (b), liquid can pass through probe.In this case, it has also been found that this
In non-scanning type probe may be it is highly useful, for example, discrete point measurements probe, for example, contact trigger-type probe (or
" double states " probe).It is also possible to liquid across probe useful to non-contact type probe.Furthermore, it is possible to by passing through liquid
Probe, the operating environment without making liquid enter probe (reach on the processed goods just measured) Lai Shixian for example, not being pierced by probe
Benefit.For example, for example, controlling purpose for temperature, liquid can only be circulated by probe.In such a case, it is possible to
The fluid return passageway for having passed through the pipeline in probe and having returned to regulating system 38 and/or storage tank 34 is provided by machine tool.
Claims (10)
1. a kind of method for examining the processed goods on lathe comprising:
It is mounted on the contact type probe on the lathe along the surface scan of the processed goods to be tested, while being swept described
The sliding contact between the contact type probe and the surface of the processed goods is kept during retouching；
It is characterized in that, the method includes during the scanning at least between the contact type probe and the processed goods
Interaction point at supply fluid stream.
2. according to the method described in claim 1, wherein passing through at least one fluid flow installations during the scanning towards institute
The interaction point stated between contact type probe and the processed goods guides the fluid.
3. according to the method described in claim 2, wherein the fluid passes through at least one described fluid during the scanning
Stream device is directed to the practical interaction point between the contact type probe and the processed goods and separates but be substantial access to
Point at, to make fluid stream at least in described between the contact type probe and the processed goods during the scanning
At interaction point.
4. according to the method described in claim 2, wherein the fluid flow installations are independently of the contact type probe.
5. according to the method described in claim 4, the wherein at least described fluid flow installations include at least one outlet, the outlet
The movement of the contact type probe is at least followed during the scanning.
6. according to the method described in claim 5, outlet described in wherein at least one is attached in the lathe with the contact
The movement of formula probe and on the part of movement.
7. according to the method described in claim 1, wherein the lathe includes during machining operations for supplying cooling
Agent is to cool down the cooling system of machine tool, and wherein the method includes the cooling system described during scanning supplies
The fluid stream.
8. according to the method described in claim 1, wherein the fluid is liquid.
9. according to the method described in claim 1, wherein the contact type probe includes the deflectable touching for contacting with workpiece
Needle, and be configured to export the measurement of the degree of deflection of the contact pilotage.
10. a kind of equipment for examining processed goods comprising:
Lathe；
The contact type probe being mounted on the lathe；
Fluid flow installations；
Wherein the equipment is arranged such that the contact described in the surface scan wherein along the processed goods in the lathe is visited
Needle while the measurement that the sliding contact between the contact type probe and the surface of the processed goods is kept during the scanning
During operation, the fluid flow installations are operated so that fluid stream is at least between the contact type probe and the processed goods
Interaction point at.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12250176 | 2012-11-14 | ||
| EP12250176.0 | 2012-11-14 | ||
| PCT/GB2013/052884 WO2014076454A1 (en) | 2012-11-14 | 2013-11-05 | Method and apparatus for measuring a workpiece with a machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104813140A CN104813140A (en) | 2015-07-29 |
| CN104813140B true CN104813140B (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380058806.XA Active CN104813140B (en) | 2012-11-14 | 2013-11-05 | Method and apparatus for passing through machine tool measuring workpiece |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US10048065B2 (en) |
| EP (1) | EP2920549B1 (en) |
| JP (1) | JP6466847B2 (en) |
| KR (1) | KR20150082620A (en) |
| CN (1) | CN104813140B (en) |
| TW (1) | TWI618917B (en) |
| WO (1) | WO2014076454A1 (en) |
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| CN106030237A (en) * | 2013-12-06 | 2016-10-12 | 沃思测量技术股份有限公司 | Device and method for measuring workpieces |
| CN105793787B (en) * | 2013-12-27 | 2019-10-18 | 株式会社牧野铣床制作所 | The control device of work mechanism |
| CN106796095B (en) * | 2014-09-02 | 2021-05-28 | 瑞尼斯豪公司 | Method for operating a coordinate measuring device, coordinate measuring device and computer program |
| GB201603496D0 (en) * | 2016-02-29 | 2016-04-13 | Renishaw Plc | Method and apparatus for calibrating a scanning probe |
| JP6663807B2 (en) * | 2016-07-04 | 2020-03-13 | 株式会社キーエンス | Image measuring device |
| JP6663808B2 (en) * | 2016-07-04 | 2020-03-13 | 株式会社キーエンス | Image measuring device |
| JP2018096886A (en) * | 2016-12-15 | 2018-06-21 | 株式会社Ｉｚｏｘ | System and method for three dimensional shape measurement and inspection |
| IT201700064533A1 (en) * | 2017-06-12 | 2018-12-12 | Marposs Spa | Optoelectronic equipment for the control of mechanical parts, and relative protection device |
| CN111121651A (en) | 2018-10-31 | 2020-05-08 | 财团法人工业技术研究院 | Optical measurement stability control system |
| CN110244165A (en) * | 2019-06-20 | 2019-09-17 | 昆山埃维奥电机有限公司 | A kind of brush holder functional test mechanism and method |
| JP6810882B1 (en) * | 2019-11-27 | 2021-01-13 | 株式会社東京精密 | Detector, surface texture measuring device and measuring method |
| CN112171374A (en) * | 2020-09-25 | 2021-01-05 | 陈清 | Automatic point-searching machining process for numerical control machine tool |
| JP7030280B2 (en) * | 2020-12-01 | 2022-03-07 | 株式会社東京精密 | Surface property measuring device and measuring method |
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- 2013-11-05 US US14/438,138 patent/US10048065B2/en active Active
- 2013-11-05 WO PCT/GB2013/052884 patent/WO2014076454A1/en active Application Filing
- 2013-11-05 CN CN201380058806.XA patent/CN104813140B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2920549A1 (en) | 2015-09-23 |
| EP2920549B1 (en) | 2020-01-08 |
| WO2014076454A1 (en) | 2014-05-22 |
| KR20150082620A (en) | 2015-07-15 |
| US10048065B2 (en) | 2018-08-14 |
| JP2016515192A (en) | 2016-05-26 |
| US20150285629A1 (en) | 2015-10-08 |
| TW201428234A (en) | 2014-07-16 |
| TWI618917B (en) | 2018-03-21 |
| CN104813140A (en) | 2015-07-29 |
| JP6466847B2 (en) | 2019-02-06 |
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